package com.kch.web.controller.system;

import com.kch.common.core.controller.BaseController;
import com.kch.common.core.domain.AjaxResult;
import com.kch.common.utils.ServletUtils;
import com.kch.common.utils.StringUtils;
import com.kch.framework.util.ShiroUtils;
import com.kch.system.domain.SysUser;
import com.kch.system.domain.SysUserOnline;
import com.kch.system.service.ISysUserOnlineService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.ObjectUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 登录验证
 */
@Controller
@Api(tags = "用户登录")
public class SysLoginController extends BaseController {

    @Autowired
    private ISysUserOnlineService sysUserOnlineService;

    @GetMapping("/login")
    public String login(HttpServletRequest request, HttpServletResponse response) {
        // 如果是Ajax请求，返回Json字符串。
        if (ServletUtils.isAjaxRequest(request)) {
            return ServletUtils.renderString(response, "{\"code\":\"1\",\"msg\":\"未登录或登录超时。请重新登录\"}");
        }

        return "login";
    }

    @PostMapping("/login")
    @ResponseBody
    @ApiOperation("登录接口")
    public AjaxResult ajaxLogin(String username, String password, Boolean rememberMe) {
        Subject subject = SecurityUtils.getSubject();
        SysUser sysUser = ShiroUtils.getSysUser();
        if(!ObjectUtils.isEmpty(sysUser)){
            String session = getRequest().getHeader("Cookie");
            String onLineId = session.substring(session.indexOf("=") + 1);
            SysUserOnline sysUserOnline = sysUserOnlineService.selectOnlineById(onLineId);
            return AjaxResult.success(session);
        }
        UsernamePasswordToken token = new UsernamePasswordToken(username, password, rememberMe);
        try {
            subject.login(token);
            String header = getResponse().getHeader("Set-Cookie");
            String sessionId = header.substring(0, header.indexOf(";"));
            return success(sessionId);
        } catch (AuthenticationException e) {
            String msg = "用户或密码错误";
            if (StringUtils.isNotEmpty(e.getMessage())) {
                msg = e.getMessage();
            }
            return error(msg);
        }
    }

    @GetMapping("/unauth")
    public String unauth() {
        return "error/unauth";
    }

}
